body { 
  margin: 0;
  padding: 0;
}

.layoutContainer {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100vw;
  }
  
  .header {
    background: linear-gradient(to right, #2484dd, #7cc3e2); /* 从左到右的渐变 */
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .mainContent {
    display: flex;
    flex: 1;
  }
  
  .content {
    flex: 1;
    padding: 1rem;
  }
  
  .footer {
    padding: 0;
    background: #f5f5f5;
    height: 50px;
    line-height: 50px;
    color: #000;
    align-items: center;
    text-align: center;
  }
